Mail going in spam and also image not display because site not secure please let me know

Your software
My Mautic version is:
My PHP version is:
My Database type and version is:

Your problem
My problem is: mail going in spam and also image not display so my site was not secure that’s spam and image issue facing please Help ASAP
These errors are showing in the log:

Steps I have tried to fix the problem:

Welcome to the Mautic Community.
Check this out:

Hey, this time I will be more clear: you have to give context if you need support.

You cannot ask for help without providing the required info.

At least the Mautic version you are using…

What do you expect we can do to help you if you don’t put us in the condition of helping?

Try to read this: Mautic lands in promotions or spam folders, seems to be impossible to tweak, any idea?